Reading through old court files that mention robots.txt... you know it's good when a Judge is party to the case!
TLDR: Judge stores "funny or bizare" sexually explicit images on a family server, then connects said server to the Internet.
"""
His son suggested installing a robots.txt file. The Judge believed that would protect his entire server from access by search engines. But due to a configuration error [...]
"""
https://www.courtlistener.com/opinion/1213881/in-re-complaint-of-judicial-misconduct/